In the Russo-Turkish War, 1877–1878, Oltenița was an important crossing point into Bulgaria for Romanian troops called to aid the Russian Army during the siege of the Pleven (Plevna) stronghold.

During World War I, the garrisons of Oltenița and Turtucaia engaged in numerous artillery skirmishes. The spot was also chosen by allied German and Bulgarian troops for their invasion of Romania. The subsequent Battle of Turtucaia ended in a significant defeat for the Romanian Army.